The square root of 90 is aprox. 9, thats your answer :)
<span>Step 1: Simplify both sides of the equation.</span>
−(5−(a+1))=9−(5−(2a−3))<span />
−(5−(a+1))=9+−1(5−(2a−3))<span>(Distribute the Negative Sign)</span>−(5−(a+1))=9+(−1)(5)+−1(−2a)+(−1)(3)<span />−(5−(a+1))=9+−5+2a+−3<span />a+−4=9+−5+2a+−3<span>(Distribute)</span>a−4=(2a)+(9+−5+−3)<span>(Combine Like Terms)</span>a−4=2a+1<span />a−4=2a+1<span /><span>Step 2: Subtract 2a from both sides.</span>a−4−2a=2a+1−2a<span />−a−4=1<span /><span>Step 3: Add 4 to both sides.</span>−a−4+4=1+4<span />−a=5<span /><span>Step 4: Divide both sides by -1.</span>−a−1=5−1<span />a=−5<span />
A= <span>π (n + 4) ^2
= </span><span>π (n + 4) (n + 4)
remember order of operations FOIL
= π (n^2 + 4n + 4n + 16)
= </span>π (n^2 + 8n + 16)
A= πn^2 + 8πn + 16<span>π
do the same for B just change the signs
B = </span>πn^2 - 8πn + 16<span>π
subtract the two
(</span>πn^2 + 8πn + 16π) - (πn^2 - 8πn + 16<span>π)
=16</span><span>πn</span>
Answer:
x = 25
Step-by-step explanation:
Multiplying both sides by 5 (to get rid of the denominator) gives us:
x / 5 * 5 = 5 * 5
x = 25